BuildURL lua http.parse_url(table) returns string.

Loader is the module loader function.

ParseURL lua http.parse_url(string) returns (table, err).

Preload adds http to the given Lua state's package.preload table.

QueryEscape lua http.query_escape(string) returns escaped string.

QueryUnescape lua http.query_unescape(string) returns unescaped (string, error).